Data storage method of cloud storage system

A cloud storage system and data storage technology, applied in transmission systems, electrical digital data processing, special data processing applications, etc., can solve difficult data high availability, lack of fault tolerance and disaster tolerance, and it is difficult to provide integrity checks and guarantees Data privacy and other issues, to achieve the effect of good fault tolerance and disaster tolerance, high data availability

Inactive Publication Date: 2012-07-04
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing data storage methods have the following problems: it is difficult to ensure high availability of data in the case of low storage space a...

Method used

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  • Data storage method of cloud storage system
  • Data storage method of cloud storage system
  • Data storage method of cloud storage system

Examples

Experimental program
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example

[0073] In order to verify the feasibility and effectiveness of the method of the present invention, the method of the present invention is verified by experiments. The experimental environment includes an index server installed with Windows Server 2003 operating system and Microsoft SQL Server2005 database system, a server program PPServe ASDL SQLSERVER, a browser supporting IE kernel, a user node installed with Windows XP operating system, ActiveX program and Flex program. The experimental environment configuration is shown in Table 1 below.

[0074] Table 1

[0075] node type

operating system

CPU

Memory

hard disk

network bandwidth

index server

Windows Server 2003

2.11GHz

64GB

300G

100Mbps

user node

Windows XP

2.33GHz

2GB

150G

100Mbps

Wireless Router

none

none

none

none

54Mbps

[0076] After the user node logs in, he chooses to upload the file. Afte...

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PUM

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Abstract

The invention discloses a data storage method of a cloud storage system, which comprises the steps of: carrying out coding fragmentation on a file on the basis of a buffer zone erasure code technology to obtain data fragments and check fragments; processing the data fragments and the check fragments to obtain a check identification; storing the check identification in an index server; requesting storage resource information to the index server according to the quantity of the data fragments and the check fragments; sending the data fragments and the check fragments to a plurality of storage nodes according to the storage resource information; judging whether needing to carry out integrity check on the data fragments and the check fragments in the storage nodes; if needing to carry out integrity check on the data fragments and the check fragments in the storage nodes, sending the data integrity check information to the storage nodes, receiving an identification information set returned by the storage nodes, and judging whether data storage errors or data losses exist according to the identification information set, if yes, coding for recovering the data, and sending the recovered data to the corresponding storage nodes.

Description

technical field [0001] The invention belongs to the field of computer network and computer storage, and in particular relates to a data storage method of a cloud storage system. Background technique [0002] For network storage systems, there will be much more temporary or permanent failure nodes than traditional systems. Therefore, a network storage system must use a certain strategy to shield these nodes from failure, so as to ensure the safe storage of data. Nowadays, the data storage method of cloud storage system is widely adopted. This method can realize safe and effective storage of data through data redundancy, direct data distribution, periodic error checking, and redundant data maintenance. [0003] However, the existing data storage methods have the following problems: it is difficult to ensure high availability of data in the case of low storage space and bandwidth overhead, it is difficult to provide efficient integrity checks and ensure data privacy, and it la...

Claims

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Application Information

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IPC IPC(8): H04L29/08G06F17/30
Inventor 金海廖小飞陆枫胡宁向小宝
Owner HUAZHONG UNIV OF SCI & TECH
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